I'm having a problem with what seems to be the step element and certain attributes, namely, id, conref and product.

All are throwing errors. My colleagues are running the same version of Oxygen and using the same code free of these errors. Therefore, I can only assume these errors are configuration related? I appreciate any help in advance!

Do these type of errors get reported when editing or when publishing content? Do you have any custom changes that you made to the DITA editing or publishing functionality?Could you give us a screenshot or two with how the reported errors look like on your side? Also maybe a small sample DITA project and a set of steps to reproduce the issue on our side.... you can use our support@oxygenxml.com email address if you want to contact us directly.